是可數名詞,例如:
1、People are scared to use the buses late at night.人們害怕在深夜乘坐公共汽車。
2、The town is well served with buses and major road links.這座城市乘坐公共汽車很方便,與幹線公路的聯接也很發達。
3、Buses run frequently between the city and the airport.公共汽車頻繁地來往於市區與機場之間。